Pages (131-135); Wind & Global Circulation Patterns
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| Define Wind: | The horizontal movement of air across Earth's surface.
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| Describe a Vector measurement, or field. | It is a measurement with both magnitude and direction.
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| Define a pressure gradient. | Gradient = Change in air pressure / Change in distance
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| What determines wind velocity? | The magnitude of the pressure gradient. Large gradient = fast wind. Small gradient = slow wind.
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| An anemometer measures what? | Wind velocity.
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| How do winds blow? | From "high to low" (wind pressure).
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| Explain the Coriolis Effect. | Winds appear to curve towards the west due to Earth's rotation. The effect causes the winds to curve ever clockwise in the Northern hemisphere.
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| How are winds named? | From whence they came! From, not to!!
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| If isobars are close together, does the wind blow fast or slow? | Fast.
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| Describe the effect of wind upon the surface of the water. | The friction creates surface currents, & waves; and the wind direction determines where the ocean currents are pushed.
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| Why is the atmosphere in constant motion? | Due to differences in air temperature and pressure through out the troposphere.
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| Name the primary source of different air pressures on Earth. | Unequal heating of Earth's surface.
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| How many major convection cells exist on Earth? | Six (6)!
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| Can you name the prevailing winds in each of the six cells? | **See figure 7-8. 30 degrees North to 60 degrees North, is a South West wind.
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| Describe the jet stream. | Fast moving, narrow bands of air found near the top of the troposphere.
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| How much precipitation falls at the Equator, and each 30 degrees North and South all the way to the Poles? | Equator is Wet, 30 degrees N or S - dry, 60 degrees N or S - wet, 90 degrees N or S = dry.
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| Describe the dry regions of the world in terms of convecting air. | Cold and Dry.
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| Describe the wet regions of the world in terms of convecting air. | Warm and moist.
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| Are the zones of convergence wet or dry latitudes?(Ground level) | Wet. Can you explain why?
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| Are zones of divergence wet or dry latitudes?(Ground level) | Dry. Can you explain why?
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| Explain planetary wind belts. | Prevailing winds that move in a predictable direction most of the time. This aids meteorologists in weather prediction!
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| Depict Monsoons. | Seasonal winds over South East Asia. (See figure 7-9). Onshore brings rain, off shore yields the dry season.
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| Name the prevailing winds effecting the United States. | South Westerlies; Air parcels move from west to east, or California towards New York.
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| Can you answer the multiple choice questions found on pages 135 & 136? | Answer questions (25 - 35). If some terms or concepts remain unclear, please clarify with your instructor or a classmate.
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